TSM121

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ABSOLUTE MAXIMUM RATINGS

OPERATING CONDITIONS

Symbol

DC Supply Voltage

Value

Unit

Vcc

25

V

Iout

Output current Power Good and Fault

30

mA

Co

Collector Output Current

50

mA

Top

Operating Free Air Temperature Range

-55 to 125

°C

Pd

Power dissipation

1

W

Tstg

Storage temperature

-55 to 125

°C

Tuv

Adjustable Under voltage blanking delay at Power Up

5

V

EP

Extra Protection

5

V

PI

Power Good input

5

V

PG

Power Good output

5

V

Tpg

Adjustable Power Good delay

5

V

REM

Remote control

5

V

Trem

Adjustable Remote delay

5

V

Tsur

Adjustable Inrush Current Blank (surge)

5

V

IN+

Positive Input of the error amplifier

5

V

IN-

Negative Input of the error amplifier

5

V

FB

Feedback input of the error amplifier

5

V

OSC

Frequency setting capacitor input

5

V

1. All voltages values , except differential voltage , are with respect to network ground terminal .

Symbol

Parameter

Value

Unit

Vcc

14 to 24

V

Co

Collector Output Current

up to 30

mA

Freq

Oscillator Frequency

<200

kHz

Toper

Operating Free Air Temperature Range

0 to 85

°C

1. The TSM121 starts working properly before 14V, but the 12V line over current protection can be reliable only when Vcc has reached a

sufficient level: t(he DC supply voltage must be higher than the voltage applied on the Is12 input (12V line protection) plus 2V. For exam-

ple, if 13.2V is present on the IS12 input, the minimum required value on Vcc is 15.2V.